class<class 'statsmodels.genmod.families.links.logit'>)[source]

Binomial exponential family distribution.


link : a link instance, optional

The default link for the Binomial family is the logit link. Available links are logit, probit, cauchy, log, and cloglog. See for more information.


endog for Binomial can be specified in one of three ways.

Attributes (a link instance) The link function of the Binomial instance
Binomial.variance (varfunc instance) variance is an instance of


deviance(endog, mu[, scale]) Deviance function for either Bernoulli or Binomial data.
fitted(lin_pred) Fitted values based on linear predictors lin_pred.
initialize(endog) Initialize the response variable.
loglike(endog, mu[, scale]) Loglikelihood function for Binomial exponential family distribution.
predict(mu) Linear predictors based on given mu values.
resid_anscombe(endog, mu) The Anscombe residuals
resid_dev(endog, mu[, scale]) Binomial deviance residuals
starting_mu(y) The starting values for the IRLS algorithm for the Binomial family.
weights(mu) Weights for IRLS steps